Hi Adam,
On Wed, 4 Dec 2024 at 04:21, Adam Wagner via groups.io
<adwags=gmail....@groups.io> wrote:
Hello,
I have a DXE runtime driver that is attempting to allocate runtime pool
(via AllocateRuntimeZeroPool). I'm getting back a non-NULL pointer, but it
isn't in the runtime memory map so ConvertPointer fails later. It looks
like the returned address is in a memory region of "conventional" type
which if I understand correctly is where free memory lives?
I think I may be hitting the "Attempt to find free pages in the default
allocation bin" case here...
https://github.com/tianocore/edk2/blob/master/MdeModulePkg/Core/Dxe/Mem/Page.c#L1281
This piece is fine if it doesn't hit the normal memory bin, it will
still get the type converted in the call to CoreConvertPages. I agree
with Leif that AllocateRuntimeZeroPool should not be returning the
memory if anything failed; what I would recommend is adding some prints
or using a debugger to tell if the memory is getting the correct type
on that allocate call and then checking if it is getting freed later
by some entity.
Oliver
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